An energy audit is a process of designing and analyzing of energy flows for energy conservation in a building. The energy audit is performed to reduce the amount of energy that system is consuming.
The main idea of the energy audit is to save the energy use in a building, maintaining the best possible conditions for human comfort, health and safety.
Energy audit finds all available energy saving opportunities to reduce the use of energy.
The energy audit may vary from a Preliminary level, also called Benchmarking, to Investment-Grade audit with its detailed analytics.
A preliminary level energy audit is a simple analysis of a building’s utility use and costs. Preliminary level energy audit compares the energy use of the building to other similar buildings, reviews energy costs from electric bills, and determines the steps of a more detailed analyses.
The next level of energy audit is a walk-through audit. Depending on the preliminary audit analyses, it identifies all possible simple and low cost energy conservation measures. walk-through audit involves the visual inspection of the equipment and detailed analysis of recorded energy consumption.
Detailed, or General energy audit is based on the results of the prior analysis. This is a deeper level of the energy audit, that is studies the energy use of the facility and breaks it down to determine all the existing ways of saving energy, and provides a quantitative evaluation of the ECOs/ECMs.
The investment-grade audit performs the detailed analysis of capital-intensive modifications. Its detailed energy use report includes all the technical analysis and calibrates them against the annual and daily energy usage to find the most effective ways to save energy.